Nice! Albeit I can not import or export any files. The form for that misses when I run evolution.exe

Thank you very much for putting all this information up! I couldn't get the balls of Chad Carter's XNA Unleashed he assumes too much pre-knowledge and starts his book with a pretty boring BenchMark program…

many thanks for the tutorials I have refound hopes now on ever finishing some ideas I had…

many thanks to you for providing such good XNA tutorials,they realy help me a lot.. but there still some questions confused me , such as the meaning of parameters in the tutorial of Helicopter, how to calculate them.
a rookie in programing.